St. Martin, MS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for St. Martin, a community in Harrison County, Mississippi.
Today
92°F
Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Sunny. High near 92, with temperatures falling to around 88 in the afternoon. Southwest wind 0 to 10 mph. Chance of precipitation is 30%.
7-day forecast for St. Martin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Sunny then Chance Showers And Thunderstorms | 0 to 10 mph SW | 25% |
| Tonight | 76°F | Mostly Clear | 0 to 10 mph SW | 10% |
| Thursday | 91°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph SW | 22% |
| Thursday Night | 75°F | Mostly Clear | 0 to 5 mph SE | 12% |
| Friday | 91°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph E | 21% |
| Friday Night | 75°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph E | 21% |
| Saturday | 91°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph E | 22% |
| Saturday Night | 76°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph E | 22% |
| Sunday | 91°F | Chance Showers And Thunderstorms | 0 to 10 mph E | 45% |
| Sunday Night | 76°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 45% |
| Monday | 90°F | Chance Showers And Thunderstorms | 0 to 10 mph SE | 51% |
| Monday Night | 77°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 40% |
| Tuesday | 90°F | Chance Showers And Thunderstorms | 0 to 10 mph SW | 36% |
| Tuesday Night | 77°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 28% |
Forecast source: National Weather Service (api.weather.gov) for St. Martin (30.438, -88.862). Updated through the day.
Growing snapshot for St. Martin
Last spring frost
Feb 12
First fall frost
Dec 14
Growing season
301 days
Hardiness zone
9a
More local growing data for St. Martin: nearby ZIP 39540 weather · frost dates · planting calendar · Mississippi frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Biloxi, Ms (7.1 mi from St. Martin). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 5, 2026.